Mackie HR824 User manual

HR824
Active 2-Way Studio Monitor
SPEAKER
HR824
Features
 Flat frequency response (±1.5 dB, 39 Hz to 20 kHz)
 1" ferro-uid cooled aluminum alloy dome tweeter
 8.75" mineral-lled polypropylene cone woofer
 Proprietary, acoustically non-resonant high-frequency
exponential waveguide
 6" x 12" elliptical passive radiator for enhanced
bass performance
 100 watt HF and 150 watt LF FR Series power ampliers
 Servo-loop architecture for improved low-frequency
overload detection
 Independent high and low frequency overload detection
 High-strength cabinet constructed with 3/4" MDF
composite and 1" front board with radiused edges
 Internal H-brace for extra rigidity
 High-density adiabatic foam absorbs internal reections
 Full magnetic shielding
 Balanced XLR and 1/4" TRS, and unbalanced RCA
input connectors, downward facing
 Modied Linkwitz-Riley 24 dB/octave crossover
 Recessed adjustable sensitivity control
 Acoustic Space switch for selecting whole space,
half space, or quarter space placement
 Low-Frequency switch for bandwidth limiting the
low-frequency response
 High-Frequency switch boosts or cuts high frequencies
 Power Mode switch includes AUTO mode
 Front panel power switch with indicating LED
 Front panel overload indicating LED
HR Series
 The HR824 studio monitors are high-resolution, two-
way, bi-amplied, active monitors employing a 6th-order
Butterworth system with a built-in rear-ring mass-loaded
passive radiator. They feature a 1-inch aluminum-alloy
high-frequency transducer, a high-precision 8.75-inch die-
cast magnesium frame low-frequency transducer, and a
6-inch x 12-inch elliptical at piston passive radiator in the
back. The system is composed of a single, compact cabinet
with built-in control and amplier electronics.
 The high-frequency driver is mounted on a massive,
acoustically non-resonant die-cast zinc exponential
waveguide, which results in wide, controlled dispersion
for high-frequency sounds. The unique passive radiator
design provides smooth response down to 39 Hz.
 The FR Series™ ampliers found in the HR824 cabinet
are an example of application-specic amplier design
that can be exercised when designing active speaker sys-
tems. The low-frequency amplier is rated at 150 watts
rms continuous output, and the high-frequency amplier is
rated at 100 watts rms continuous.
 The input panel on the back accepts a line-level input
with balanced 1/4" TRS, XLR, and unbalanced RCA connec-
tors. The connectors face downward so the monitor can be
placed ush against a wall. There is an input sensitivity con-
trol to trim the gain from input to output and adjust for vari-
ous input levels. An acoustic space switch adjusts the bass
response to compensate for corner (quarter space) or wall
(half space) placement. A low-frequency switch selects a
high-pass cutoff frequency of 37 Hz, 47 Hz, and 80 Hz, and
a high-frequency switch provides either 2 dB of boost or cut
above 10 kHz. The power mode switch can be used to turn
the monitor on and off, a function that is duplicated with
the front panel switch, or to put the monitor into auto mode,
where the ampliers revert to standby when no signal is
present for several minutes. The instant a signal appears at
the input, the ampliers seamlessly come back to life and
produce sound.
 The cabinet is constructed using 3/4-inch (19 mm)
thick MDF with a 1-inch (25 mm) thick MDF front panel. An
internal H-brace provides additional cabinet stiffness, and
open cell adiabatic "foam ll" acoustic damping material
absorbs internal reections.
RELATED PRODUCTS
HR624 Active 2-Way Studio Monitor, HR626 Active 2-Way
Studio Monitor, HRS120 Active Subwoofer, HRS150 Active
Subwoofer
Applications
 Near-eld studio monitors
 Home Theater surround sound

SPEAKER
HR824
HR824 Active 2-Way Studio Monitor
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax [phone], [e-mail]
UK +44.1268.570.808, fax [phone], [e-mail]
HR824 Technical Specications
Acoustic Performance
Free Field Frequency Response: 39 Hz–20 kHz, ±1.5 dB
Lower Cutoff Frequency: –3 dB @ 37 Hz
Upper Cutoff Frequency: –3 dB @ 22 Hz
Sound Pressure Level @ 1 meter,
7.5 dBu into Balanced Input: 100 dB SPL @ 1m
Max SPL Peak Per Pair: 120 dB SPL @ 1m
Transducers
Low Frequency: 8.75" (222 mm) with die-cast
magnesium frame, mineral-lled polypropylene cone
High Frequency: 1" (25 mm) viscous edge-damped
aluminum alloy dome with ferrouid cooled voice coil
Passive Radiator: 6" x 12" (152 mm x 305 mm) mass-loaded
elliptical at piston composed of aluminum composite
with variable thickness lleted edge rubber surround
Amplier
Low Frequency Power: 150 watts, 4Ω load
350 watts peak
High Frequency Power: 100 watts, 6Ω load
210 watts peak
Slew Rate: >35V/µs
Distortion (THD, SMPTE IMD, DIM 100): <0.035%
Signal-to-Noise Ratio: >102 dB
referenced to 100 watts into rated load
Type: FR Series Class AB
Electronic Crossover
Crossover Type: Modied Linkwitz-Riley, 24 dB/octave
Crossover Frequency: 2000 Hz
Sensitivity: 0 dBu nominal
Input Impedance: 20 kΩ, balanced bridging
Compressor: Independent high and low frequency
overload detection
Equalization
Acoustic Space EQ: Flat, –2 dB, –4 dB @ 100Hz, shelving
Low Frequency EQ: –3 dB @ 37 Hz
2nd-order Transitional high-pass lter
–3 dB @47 Hz
4th-order Chebyshev high-pass lter
–3 dB @ 80 Hz
4th-order Butterworth high-pass lter
High Frequency EQ: ±2 dB @ 10 kHz, shelving
Line Input Power
US: 120 VAC, 60 Hz
Europe: 230 VAC, 50 Hz
AC Connector: 2-pin IEC 250 VAC, 16 A male
Power Consumption: 135 watts with music, loud mix
18 watts quiescent (idle)
8 watts in standby mode
Physical
Enclosure: 3/4" (19 mm) thick MDF
with 1" (25 mm) MDF front panel, internal H-brace
Damping: Adiabatic foam
Waveguide: Cast zinc
Dimensions (HxWxD): 15.75" x 10.00" x 12.20"
(400 mm x 254 mm x 310 mm)
Weight: 33.6 lbs (15.2 kg)
HR824 Rear Panel
ACOUSTIC SPACE HIGH FREQ. POWER MODE
NORMALOFF
HALFQUARTER
ABC
WHOLE
(NORMAL)
0
(NORMAL)
–
2dB
+
2dB
®
INPUT
SENSITIVITY
ACOUSTIC SPACE APPLICATIONS
C
SPEAKERS AGAINST WALLSPEAKERS IN CORNERS
B
CONSOLE
CONSOLE
A
HALF SPACE
QUARTER SPACE
HIGH RESOLUTION STUDIO MONITOR
SPEAKERS AWAY FROM WALLS
CONSOLE
WHOLE SPACE
• 0dB (START HERE) GUARANTEED FLAT
USE FOR MOST APPLICATIONS
• +2dB: USE IF YOUR MIXES TRANSLATE BRIGHT
• – 2dB: USE IF YOUR MIXES TRANSLATE DULL
• USE 80Hz TO EMULATE SMALL SPEAKER
• USE 47Hz FOR NORMAL LF PERFORMANCE
• USE 37Hz FOR NORMAL EXTENDED
LOW FREQ PERFORMANCE
HIGH FREQ.
0dB
–
2dB
10kHz
+2dB
–
3dB
LOW FREQ
LOW CUT
24dB/oct
LOW CUT
BUTTERWORTH
47Hz 80Hz
37Hz
0dB
ACOUSTIC SPACE
0dB
–
2dB
–
4 dB
20
ROOM COMPENSATION
100Hz
FREE FIELD ACOUSTIC RESPONSE
1k
22 k Hz
37Hz
–
3dB
–
3dB 1.5dB 39Hz
–
20kHz
+
–
LOW FREQ
37Hz80Hz 47Hz
LOW CUT
–
10dB
(NORMAL )
LISTED COMMERCIAL
AUDIO EQUIPMENT
9Z39
R
MAINS INPUT
120 VAC
60 Hz 150W
SIGNAL INPUTS BAL /UNBAL
XLRPHONE RCA
INTERNAL BI•AMPLIFICATION
150W. L.F. / 100W. H.F.
™
SERIAL NUMBER
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
CAUTION
AVIS: RISCQUE DE CHOC ÉLECTRIQUE — NE PAS OUVRIR
CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC • WOODINVILLE • WA • USA
MADE IN USA • PATENTS PENDING • © 1997 MACKIE DESIGNS INC. ALL RIGHTS RESERVED
"MACKIE", "FR SERIES", AND THE "RUNNING MAN" FIGURE ARE REGISTERED TRADEMARKS OF MACKIE DESIGN INC.
PATENT NO:
DES. 387,351
AUTO
STANDBY ON
ON
LOUD Technologies continually engages in research related to product improvement. New material,
production methods, and design renements are introduced into existing products without notice
as a routine expression of that philosophy. For this reason, any current LOUD Technologies product
may differ in some respect from its published description, but will always equal or exceed the origi-
nal design specications unless otherwise stated. ©1999-2004 LOUD Technologies Inc. All rights
reserved. Mackie and the "Running Man" gure are registered trademarks of LOUD Technologies Inc.
Part No. 0004809 Rev B 09/04